On a live music radio show, a letter arrives from the 23 years in the past. Through the letter, the first love and friendships of five friends are revealed.

A man on deathrow wants to taste “doenjang jjigae” (a spicy Korean bean paste stew) before he dies. Television producer Choi Yu-Jin (Ryoo Seung-Ryong) hears of the inmate and researches his story for an upcoming news report. Choi Yu-Jin then comes across a mysterious woman named Jang Hye-Jin (Lee Yo-Won) who makes doenjang jjigae that brings tears of joy to those who tastes her recipe. As Choi Yu-Jin delves further, he learns of Jang Hye-Jin’s heart breaking relationship with Kim Hyun-Soo (Lee Dong-Wook).

Four stepbrothers are having a hard time getting along as a family. 15 years after their parents’ second wedding, the four unexpectedly head home and reunite by an urgent call from their youngest stepsister, born between the remarried parents. Although their rivalry escalates, the four brothers come to a momentary truce to put their hearts together and find their missing parents.

In-Soo (Kang Ha-Neul) has a special gift to see ghosts and has become isolated from other students because of this. He transfers to a high school in a rural area outside of Seoul. There, In-Soo meets a female ghost (Kim So-Eun) at the high school and forms a friendship with her. Meanwhile, classmates disappear one by one.

A missing person case involving a female university student and the victim in a hit and run case appears to be the same person. Detectives look for a witness. A witness, Min Soo-Ah appears, but Min Soo-Ah is blind. She used to be a promising student at the police academy. With her acute senses, Min Soo-Ah is able to reveal important clues on the hit and run case. Another witness, Kwon Gi-Seob then appears. Gi-Seob, who witnessed the case with his own eyes, gives contradictory statements to Min Soo-Ah. The investigation then goes through many twists and turns, while Min Soo-Ah finds herself up against the killer.